10-12 April 2019
Denver, CO
US/Mountain timezone
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Contribution contributed talk

Denver, CO - Director's Row J

Extracting the Neutron Structure Function from Global DIS Data using CJ15

Speakers

  • Shujie LI

Primary authors

Content

The CJ (CTEQ-Jefferson Lab) Collaboration provides a global fit of parton distribution functions (PDFs) with a special emphasis on the large xbj region. The latest fit (CJ15) implemented deuteron nuclear corrections at the parton level, and included data that were sensitive specifically to the neutron. These nuclear corrections allow for a calculation of the F2 structure functions of the proton, deuteron, and neutron from PDFs. In this work we re-estimated the uncertainties in the DIS F2 data utilized in CJ15, and collected an extended set of existing high-precision, small Q2, large xbj DIS data from JLab 6 GeV experiments. We employed the CJ15 calculation to remove nuclear effects from deuteron data where the proton was available from the same experiment, and thereby constructed a global data set for the F2 neutron structure function. In this talk we will present the extracted F2 neutron data sets, and also a new neutron excess (isoscalar) correction as an application.